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The world's best gem articles, published weekly.

Most Recent Articles

How to Start a Gem Collection

Although many gem enthusiasts want to become collectors, they may not know where to begin. Read this article for tips on how to start a gem collection.

Tips and Tools for Handling Gems Securely

These tips and tools for handling gems securely will help novice gemologists and gem cutters reduce the risk of dropping and losing valuable stones.

Cutting Natural Rough Stones: The Breaks

If you’re cutting natural rough gems, learn to expect fractures. Stress from an unknown flaw can break out during roughing, faceting, or even polishing.

Chambersite Value, Price, and Jewelry Information

Chambersite is an exceedingly rare mineral. Although it has properties suitable for jewelry use, its crystals occur in very small sizes. Few cut specimens of this colorless, brownish, or purple stone exist.

Paraíba Tourmaline Buying Guide

Paraíba’s neon blue hues stunned the gem world in the 1980s. Read about the quality factors for this striking gem in our paraíba tourmaline buying guide.

Money-Saving Ways to Clean Jewelry

Some household products and do-it-yourself methods can clean jewelry safely and save you money. Discover the common ingredients in some miracle cleaners.

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"Becoming a Pro Member of IGS just made good sense for my business. The gemology resources are fantastic, and my profile lets potential customers know I am serious about colored gemstones. And frankly, if I get any exposure to potential customers it's a no-brainer."
Paul Bierker, Paul Michael Designs
Jeweler, IGS Pro Member

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Over 15 years, we have assembled detailed pricing and value information for appraising over 70 different gemstones. The values in our guide come from a variety of sources including primary and secondary gemstone dealers, jewelers, miners, and wholesale suppliers of commonly traded gemstones.

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